There are some supposedly new ones on-line too at that firearms auction site that we can't mention... although I don't see any reference to night sights.
Price is a little lower than $800... but it doesn't matter to me. I can't buy them where I live. They aren't on our "lists" and the 15-round magazines are undoubtedly post-ban... meaning up to 10 years in prison for me if I even touch one.
I'll stick with the two vintage 5943 pistols that I already own in combo with my 15-round pre-ban magazines. Perfectly legal for me and half the price of these supposedly brand new 5946's.